Quartzsite, AZ to Durango, CO in Class A motorhome w/ toad
We are planning to leave Quartzsite the end of March or beginning of April in a 30 ft class A motorhome w/ a tow vehicle. I've been researching on routes to take, and am a little concerned with what I've read about taking US 160E, especially nearing Cortez (steep grades, curves, etc).
Wondering if that is the best route, or if it's better to go east from Flagstaff and then take either 491, 371, or 550?
Any suggestions or experiences would be appreciated.